An automobile delivers 30.0 hp to its wheels when moving at a constant speed of 26.0 m/s. What is the resistance force on the automobile at this speed? (1 hp = 746 watts)
a. 18,600 N
c. 1020 N
b. 410,000 N
d. 861 N
D
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A heterogeneous mixture is a combination of two of
more substances that a) have a large amount of solute dissolved in a given solvent. b) are composed of atoms all having the same number of protons in their nucleus. c) appear nonuniform throughout any sample. d) are combined chemically in a fixed ratio by mass. • •
The energy of a photon is proportional to
A. its polarization. B. its wavelength. C. its frequency. D. its mass.
When does film boiling begin?
What will be an ideal response?
Single-Slit Diffraction: In a single-slit diffraction experiment, the width of the slit through which light passes is reduced. What happens to the width of the central bright fringe in the resulting diffraction pattern?
A. It stays the same. B. It becomes narrower. C. It becomes wider.